Drilling apparatus



Oct. 27, i931. F. A. scHROEDER DHILLING APPARATUS FiledJan. 19, 1929 3 Sheets-Sheet 0d 27, 1931- F. A. scHRoEDER 1,829,304

DRILLING APPARATUS Filed Jan. 19, 1929 3 sneetssheer 2 MG/www@ Oct. 27; 1931.

F, A. scHRoEDER 1,829,304

DRILLING APPARATUS Filed Jan. 19, 1929 3 Sheets-Sheet 5 Patented et. V27, 1931 UNITED STATES PATENT OFFICE rnnnnnrcx A. scnnonnnn, or noon-mme rm, Naw AssIGNon To RAYMOND coNcnE'rN PILE coNrANY, or NEW Yonx, N. Y., a oonronn'rroN or NEW JERSEY nmLING urnna'rus Appuaon med nnen-y 19, 192s. serial No. 353,688.

This invention pertains to' apparatus for drilling holes for piles, and has for its ob-A ject the design of a machine especially adapted for drilling such holes at a considerable depth under water, or in ground too hard for jettingor drilling by usual methods, or at an angle from the vertical or 111 a variety of unusual or difficult situations.

An important feature of the invention 1s the provision of a bearing which may be moved and rigidly supported ad]acent the drill, wherever the drill may be, for` the purpose of positively guiding the drill 1n the direction it should take.

Another important feature is the provision of an inclinable structure which enables the drill to operate at any desired angle.

Further and lother objects and advantages will be hereinafter set forth in the accompanying specification and claims, and shown in the drawings which by way of illustration show what is now considered the preferred embodiment of the invention.

Fig. 1 is a side view of the apparatus A mounted on a barge. v

Fig. 2 is an enlarged sectional detail on the line 2--2 of Fig. 1.

Fig. 3 is an enlarged sectional detail on the line 3-3 of Fig. 1.

Fig. 4 is a side view of Fig. 3.

Fig. 5 is a side view of a part of Fig. 2, showing the method of supporting the drill rig in inclined position.

Figs. 6, 7 and 8 are diagrammatic views showing the apparatus Aperforming vertical and inclined drilling operatlons.

Fig. 9 is an enlarged detail IReferring to Fig. 1, the apparatus com'- prising the invention is shown mounted for operation on the right hand end of a barge 20. The crane 22 at the other end of the barge is used for tilting the derrick, for the handling of supplies and auxiliary work of that nature.- It is operated by hoisting engine 24, supplied with steam by boiler 26, which also furnishes steam for the steam pump, and engines connected with the drilling apparatus. The drilling rig comprises a derrick 30,

yon the line mounted on trunnions 32 in bearings 33 on bed plate or base 34 on top of the barge. The bottom horizontal members 36 of the derrick extend forwardly to support the rotary 38, and rearwardly to a cross member 40 which is normally locked by pins 42 and brackets 43 to strut 44 pivoted by bolts 46 in brackets 48 fast to beams 34. Boards or wedges 50, inserted above the free ends of struts 44 'and below timbers 36, serve to lock the parts in the full line position shown in Fig. 5.

When the drill is to be operated vin an inclined position, as for instance in Fig. 7 pins 42 and wedges 50 are removed from the positions in which they are shown, the derrick is tipped forward by the aid of crane 22 until it reaches the position of Fig. 7, and struts 44 are raised and attached to the lower rear corner of the tilted derrick by pins 52 passed through brackets 43 and holes 54 at the free ends of the struts. The derrick is then locked securely in the dotted line position of Figs. 1 and 5. By making struts 44 of suitable length any desired angle of in- (liiltion may be given to the derrick and Fast onthe front of the derrick are the normallyf vertical timbers or leads 60. Between leads 60 is a vertical steel I-beam 62, guided for vertical movement by steel angles 64 bolted to the leads and entering channels 66 formed by riveting plates 68 and spacers 70 to the rear iiange of beam 62 as shown in Figs. 2, 3 and 9. Beam 60 is supported from'above by line 72 passing over sheave 74 to hoisting drum 76, by which the beam may be raised or lowered as desired.

The upper end of beam 62 is provided with a vertical shaft bearing 78 which supports for rotation the upper end of the drill rod 82. A bearing 80 at the lower end of beam 62 supports the lower end of the drill rod. The part of the drill rod passing through bearings 38 and 8O is of circular cross-section, the balance of the rod being square. The entire drill rod is hollow and water is forced through it by pump 84 through hose 86 and water swivel 88 to emerge at drill 90 on the lower end of the drill rod. The drill rod is supported from above by hook 92 engaging swivel 88 40 cult conditions which could not be handled with former equipment. Not only can thev andinlturnsupported by cable 94 y es as brackets 100, shown indetal inFi" 35 and 4. Collars 102 fast to the drill rod' a ve and. below bearings 78 prevent the rod mov-` ing lengthwise thug-h the bearingthere-- fore wheneverthe d rod is moved vertical- 1y by cable 94 .bearing 7s moves with it along beam 62. Bearin 80 on the other hand is fast to beam 62, t erefore the drill rod mayr move vertically through that bearing.

hole 104 in bevel gear 38 which. Ais supthrough the rotary, and through bearing 180,`

. countershaft 114 b ported for rotation in bearingI or housin 106 mounted on the forward extension o 36. Gear 38, known as the rotar is driven by pinion 108 on the end of sha 110 carried 1n bearings 112. Shaft. 110 is drlven from chain 116 and a proriate sprockets. S aft 114 is in turn riven y chain 118 from engine 120. Thls shaft is in axial alignment with trunnions 32, therefore the drive of the rotary is not affected when the drill rig is inclined.

With the above description in mind the action and utility of the apparatus `will be readily understood. When 1t is desired to bore a hole below water level, drill and guidemember 62 are lowered until the drill reaches the ground to. be drilled, with bearin 80 immediately above the drill. vSupporte in this manner the drill is able to start holes in hard pan, sloping surfaces, or other diliiholes be started exactly where wanted, but they can be drilled exactly on the line desired because the drill stem is supported at the ground surface by-,A bearing 80, as shown in Figs. '6,7 and 8. It will be understood that as the drilling proceeds, 'de member 62 remains stationary, while t e drill and drill rod move downwardly relatively thereto. As the drill moves down the drill rod slides while bearing 78 moves down with the rod.

When it is necessary to drill an inclined hole for batter piles the derrick is tilted as described and the drilling then proceeds exactly as-if the rig were vertical. uch a situation is illustrated in Fig. 7.

The invention has particular utility in cutting continuous trenches for concrete sheet piling. In such work the machine accurately drills aseries of holes'close to ether, and then in a separate operation. dnlls out the partitions between' the holes. Work of this kind requires very accurate drilling, which onlyl'the presentimachinecan performon'ad I l count of its means for guiding and su rtl" the drill. PPO

appended claims.- Iclaimfr r j 1. In lan ap' `aratus for holes for piles in means a ove the water level for rotating the drill rod, a drill on the lower end of said rod, and a bearing supported'by said apparatusad'acent. the ground for guidin said drill ro for rotation: whereby said rill is held on the desired drilling line.

2. In anapparatus for drilling holes for piles in groun below water level, a drill rod, a drill on said rod, means for rotating said rod to actuate said drill, a bearing surrounding said rod adjacent said drill, meansfor lowering said drill to ground level, means for lowering said bearing, and means for su portin said bearing at a point near t e groun level for guiding said drill while it is being actuated. y

3. In apparatus for drilling holes for piles, in combination, a vertical guide beam, a'drill rod supported for rotation by said guide saiddrill rod vertically'.

4. In apparatus for drilling holes for piles,

in combination, a derrick, a vertical guide 1beam on said derrick, a shaft bearing rigidly mounted on the lower end of said beam, a. shaft bearing mounted to move along the upper end of said beam, a vertical drill rod supported for rotation by said upper and lower bearings and means for moving said drill rod and upper bearing along-said beam while the lower end of said rod moves vertically through said lower bearing.

5. The invention set forth in claim 4 in which means is also provided for moving said beam vertically on said derrick.

6. In apparatus for drillinglholes for piles,

in combination, a derrick, dr1 ing apparatus mounted on said derrick, a trunnion, means for rotating said derrick about said trunnion wherebysaidderrick may be set in `any desiredinclined position, and means for driving said apparatus, said driving means in-` cluding a counter-shaft in axial alignment with said trunnion whereby Said driving means may without adjustment thereof drive said apparatus in any position of said derrick.

7. In apparatus for drilling holes for piles, in combination, a base, a lderrick on said base, a trunnion connecting the front edge of said derrick tosaid base, means'for rotating said derrick to an inclined position on said trun- V ne derrick when said derrick is so inclined drill- .ing apparatus mounted on said derricg and means for actuating said a paratus while said derrick is in its incln In testimony whereof I hereto ax nature.

position.

my sig-Y FREDERICK A. SCHBOEDER. 

